Thread: Polar evening
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Old February 18th 18, 07:09 PM posted to sci.astro.amateur
Gerald Kelleher
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Default Polar evening

Rotation as a function of the orbital motion of the Earth turns the North and South poles parallel to the orbital plane. Easy enough to discern via the Antarctic Continent from September to March representing the day part of the polar day/night cycle -

https://www.youtube.com/watch?v=CFrP6QfbC2g&t=92s

Genuine teachers would have no difficulty with the principle that in the absence of daily rotation, the entire surface of the planets turns once each year to the Sun as a function of the forward orbital motion of the Earth through space.